<!DOCTYPE html>
<html>
  <head>
    <meta charset="UTF-8">
    <title></title>
  </head>
  <style>
    div{
      width: 100px;
      height:100px;
      margin: 200px auto;
      background: #ccc;
      transform: rotate(-45deg);
      /*transform: rotate(-45deg) scale(1,2);*/
    }
    .box{
      transition: all .75s;
    }
    .box:hover{
      transform:scale(1,2)  rotate(-45deg) ;
    }
  </style>
  <body>
    <div class="box">
    </div>
  </body>
</html>
